chore: get release notes from the tag's message body

.forgejo/workflows/release.yaml

@@ -18,6 +18,16 @@ jobs:
       id: go-version
       run: |
         sed '/^go /!d; s/go /version=/' go.mod >>"$GITHUB_OUTPUT"
+    -
+      name: Extract release notes
+      id: release-notes
+      run: |
+        git fetch --depth=1 origin +refs/tags/*:refs/tags/*
+        TAG_DATA="$(git tag -l --format '%(contents:body)' "${GITHUB_REF#refs/tags/}")"
+        TAG_DATA="${TAG_DATA//'%'/'%25'}"
+        TAG_DATA="${TAG_DATA//$'\n'/'%0A'}"
+        TAG_DATA="${TAG_DATA//$'\r'/'%0D'}"
+        echo "::set-output name=content::${TAG_DATA}"
     -
       name: Setup Go
       uses: actions/setup-go@v5
@@ -38,4 +48,5 @@ jobs:
         direction: upload
         name: binaries
         release-dir: dist/release
+        release-notes: ${{ steps.release-notes.outputs.content }}
         token: ${{ secrets.FORGEJO_TOKEN }}